[30318] | 1 | ###############################################################################
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| 2 | #
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| 3 | # DBDrivers/TDB.pm -- utility functions for writing to tdb databases. Should be
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| 4 | # hauntingly similar to GDBM utility functions.
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| 5 | #
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| 6 | # A component of the Greenstone digital library software from the New Zealand
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| 7 | # Digital Library Project at the University of Waikato, New Zealand.
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| 8 | #
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| 9 | # Copyright (C) 2011-2015 New Zealand Digital Library Project
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| 10 | #
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| 11 | # This program is free software; you can redistribute it and/or modify it under
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| 12 | # the terms of the GNU General Public License as published by the Free Software
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| 13 | # Foundation; either version 2 of the License, or (at your option) any later
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| 14 | # version.
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| 15 | #
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| 16 | # This program is distributed in the hope that it will be useful, but WITHOUT
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| 17 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 18 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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| 19 | # more details.
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| 20 | #
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| 21 | # You should have received a copy of the GNU General Public License along with
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| 22 | # this program; if not, write to the Free Software Foundation, Inc., 675 Mass
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| 23 | # Ave, Cambridge, MA 02139, USA.
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| 24 | #
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| 25 | ###############################################################################
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| 26 |
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| 27 | package DBDrivers::TDB;
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| 28 |
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| 29 | # Pragma
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| 30 | use strict;
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| 31 |
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| 32 | # Libraries
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| 33 | use Cwd;
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| 34 | use ghtml;
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| 35 | use util;
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| 36 | use DBDrivers::GDBM;
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| 37 |
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| 38 | sub BEGIN
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| 39 | {
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| 40 | if (!defined $ENV{'GSDLHOME'} || !defined $ENV{'GSDLOS'}) {
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| 41 | die("Error! Environment not prepared. Have you sourced setup.bash?\n");
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| 42 | }
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| 43 | if (!defined $ENV{'GEXTTDBEDIT_INSTALLED'}) {
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| 44 | die("Error! Path to TDB binaries not found. Have you sourced setup.bash?\n");
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| 45 | }
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| 46 | @DBDrivers::TDB::ISA = ( 'DBDrivers::GDBM' );
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| 47 | }
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| 48 |
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| 49 | sub new
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| 50 | {
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| 51 | my $class = shift(@_);
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| 52 | return bless ($self, $class);
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| 53 | }
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| 54 |
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| 55 | # -----------------------------------------------------------------------------
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| 56 | # TDB IMPLEMENTATION
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| 57 | # -----------------------------------------------------------------------------
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| 58 |
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| 59 | ## Ask TDB executables to display debugging information?
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| 60 | my $debug = 0; # 1 to enable
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| 61 |
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| 62 | ## Should the TDB used a specific affinity?
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| 63 | my $forced_affinity = -1; # zero upwards indicates the affinity
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| 64 |
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| 65 | ## Default TDB file extension
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| 66 | my $infodb_file_extension = '.tdb';
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| 67 |
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| 68 | ## @function _get_tdb_executable(string)
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| 69 | #
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| 70 | sub _get_tdb_executable
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| 71 | {
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| 72 | my $program = shift(@_);
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| 73 | if (!defined $ENV{GEXTTDBEDIT_INSTALLED} || !-d $ENV{GEXTTDBEDIT_INSTALLED})
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| 74 | {
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| 75 | die('Fatal Error! Path to TDB binaries not found. Have you sourced setup.bash?');
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| 76 | }
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| 77 | my $program_exe = &util::filename_cat($ENV{GEXTTDBEDIT_INSTALLED} . '/bin/' . $program . &util::get_os_exe());
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| 78 | if (!-x $program_exe)
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| 79 | {
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| 80 | die('Fatal Error! File doesn\'t exist or isn\'t executable: ' . $program_exe);
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| 81 | }
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| 82 | return $program_exe;
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| 83 | }
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| 84 | ## get_tdb_executable(string) => string ##
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| 85 |
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| 86 |
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| 87 | # With infodb_handle already set up, these functions work the same as parent version
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| 88 | # sub close_infodb_write_handle {}
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| 89 | # sub delete_infodb_entry {}
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| 90 | # sub write_infodb_entry {}
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| 91 | # sub write_infodb_rawentry {}
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| 92 |
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| 93 |
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| 94 | ## @function open_infodb_write_handle(string, string)
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| 95 | #
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| 96 | sub open_infodb_write_handle
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| 97 | {
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| 98 | my $infodb_file_path = shift(@_);
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| 99 | my $opt_append = shift(@_);
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| 100 |
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| 101 | my $txt2tdb_exe = &_get_tdb_executable('txt2tdb');
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| 102 |
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| 103 | my $pool_key = $infodb_file_path;
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| 104 | my $cmd = '"' . $txt2tdb_exe . '"';
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| 105 | if ((defined $opt_append) && ($opt_append eq "append")) {
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| 106 | $cmd .= ' -append';
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| 107 | }
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| 108 | $cmd .= ' "' . $infodb_file_path . '"';
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| 109 | # Optional flags
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| 110 | if ($forced_affinity >= 0) {
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| 111 | $cmd = 'taskset -c 5 ' . $cmd;
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| 112 | }
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| 113 | if ($debug) {
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| 114 | $cmd .= ' -debug';
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| 115 | }
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| 116 |
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| 117 | # we're going to pipe the key value pairs, in the appropriate format, from
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| 118 | # within the buildproc, so we create a piped handle here
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| 119 | my $infodb_file_handle = undef;
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| 120 | print STDERR "tdb::open_infodb_write_handle(" . $infodb_file_path . ")\n";
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| 121 | if(!open($infodb_file_handle, "| $cmd")) {
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| 122 | print STDERR "Error: Failed to open pipe to $cmd\n";
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| 123 | print STDERR " $!\n";
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| 124 | return undef;
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| 125 | }
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| 126 | binmode($infodb_file_handle,":utf8");
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| 127 | return $infodb_file_handle;
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| 128 | }
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| 129 | ## open_infodb_write_handle(string, string) => filehandle ##
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| 130 |
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| 131 |
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| 132 | ## @function get_infodb_file_path(string, string)
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| 133 | #
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| 134 | sub get_infodb_file_path
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| 135 | {
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| 136 | my $collection_name = shift(@_);
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| 137 | my $infodb_directory_path = shift(@_);
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| 138 | my $infodb_file_name = &util::get_dirsep_tail($collection_name) . $infodb_file_extension;
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| 139 | return &util::filename_cat($infodb_directory_path, $infodb_file_name);
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| 140 | }
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| 141 | ## get_infodb_file_path(string, string) => string ##
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| 142 |
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| 143 |
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| 144 | ## @function read_infodb_file
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| 145 | #
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| 146 | sub read_infodb_file
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| 147 | {
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| 148 | my $infodb_file_path = shift(@_);
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| 149 | my $infodb_map = shift(@_);
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| 150 |
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| 151 | my $tdb2txt_exe = &_get_tdb_executable('tdb2txt');
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| 152 |
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| 153 | if (!open (PIPEIN, '"' . $tdb2txt_exe . '" "' . $infodb_file_path . '" |')) {
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| 154 | print STDERR 'Error: Failed to open pipe to ' . $tdb2txt_exe . "\n";
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| 155 | print STDERR " $!\n";
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| 156 | return undef;
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| 157 | }
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| 158 |
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| 159 | binmode(PIPEIN,":utf8");
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| 160 |
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| 161 | my $infodb_line = "";
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| 162 | my $infodb_key = "";
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| 163 | my $infodb_value = "";
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| 164 | while (defined ($infodb_line = <PIPEIN>)) {
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| 165 | if ($infodb_line =~ /^\[([^\]]+)\]$/) {
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| 166 | $infodb_key = $1;
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| 167 | }
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| 168 | elsif ($infodb_line =~ /^-{70}$/) {
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| 169 | $infodb_map->{$infodb_key} = $infodb_value;
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| 170 | $infodb_key = "";
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| 171 | $infodb_value = "";
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| 172 | }
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| 173 | else {
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| 174 | $infodb_value .= $infodb_line;
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| 175 | }
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| 176 | }
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| 177 | close (PIPEIN);
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| 178 | }
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| 179 | ## read_infodb_file(string, hashmap) => void ##
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| 180 |
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| 181 |
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| 182 | ## @function read_infodb_keys(string, hashmap)
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| 183 | #
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| 184 | sub read_infodb_keys
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| 185 | {
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| 186 | my $infodb_file_path = shift(@_);
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| 187 | my $infodb_map = shift(@_);
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| 188 |
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| 189 | my $tdbkeys_exe = &_get_tdb_executable('tdbkeys');
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| 190 |
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| 191 | if (!open (PIPEIN, '"' . tdbkeys_exe . '" "' . $infodb_file_path . '" |')) {
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| 192 | die("Error! Couldn't open pipe from read_infodb_keys: $infodb_file_path\n$!\n");
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| 193 | }
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| 194 |
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| 195 | binmode(PIPEIN,":utf8");
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| 196 |
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| 197 | my $infodb_line = "";
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| 198 | my $infodb_key = "";
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| 199 | my $infodb_value = "";
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| 200 | while (defined ($infodb_line = <PIPEIN>)) {
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| 201 | # remove end of line
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| 202 | chomp $infodb_line;
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| 203 | $infodb_map->{$infodb_line} = 1;
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| 204 | }
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| 205 |
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| 206 | close (PIPEIN);
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| 207 | }
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| 208 | ## read_infodb_keys(string, hashmap) => void ##
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| 209 |
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| 210 |
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| 211 | ## @function set_infodb_entry(string, string, hashmap)
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| 212 | #
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| 213 | sub set_infodb_entry
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| 214 | {
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| 215 | my $infodb_file_path = shift(@_);
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| 216 | my $infodb_key = shift(@_);
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| 217 | my $infodb_map = shift(@_);
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| 218 |
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| 219 | # Protect metadata values that go inside quotes for tdbset
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| 220 | foreach my $k (keys %$infodb_map) {
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| 221 | my @escaped_v = ();
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| 222 | foreach my $v (@{$infodb_map->{$k}}) {
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| 223 | if ($k eq "contains") {
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| 224 | # protect quotes in ".2;".3 etc
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| 225 | $v =~ s/\"/\\\"/g;
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| 226 | push(@escaped_v, $v);
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| 227 | }
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| 228 | else {
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| 229 | my $ev = &ghtml::unescape_html($v);
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| 230 | $ev =~ s/\"/\\\"/g;
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| 231 | push(@escaped_v, $ev);
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| 232 | }
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| 233 | }
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| 234 | $infodb_map->{$k} = \@escaped_v;
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| 235 | }
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| 236 |
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| 237 | # Generate the record string
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| 238 | my $serialized_infodb_map = &_convert_infodb_hash_to_string($infodb_map);
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| 239 |
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| 240 | # Store it into GDBM
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| 241 | my $tdbset_exe = &_get_tdb_executable('tdbset');
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| 242 | my $cmd = '"' . $tdbset_exe . '" "' . $infodb_file_path . '" "' . $infodb_key . '" "' . $serialized_infodb_map . '"';
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| 243 | my $status = system($cmd);
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| 244 |
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| 245 | return $status;
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| 246 | }
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| 247 | ## set_infodb_entry(string, string, hashmap) => integer ##
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| 248 |
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| 249 | 1;
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